High accuracy swath advance paper positioning for printers

Details High accuracy swath advance paper positioning for printers High accuracy swath advance paper positioning for printers

2006-05-23

2006-05-23

Moore, David (Department: 2624)

Facsimile and static presentation processing

Static presentation processing

Size, resolution, or scale control

C358S001100, C358S001160, C382S151000, C382S112000, C382S184000

Reexamination Certificate

active

07050193

ABSTRACT:
Techniques for high accuracy media positioning in a swath printer. A high accuracy media positioning method includes mounting a computer-controlled printing element for movement along a swath axis for swath printing of an image on a print medium, moving the printing element along the swath axis and printing at least a portion of a swath of the image on the print medium, sensing the position of an edge of the just printed portion of the image which is nominally aligned with the scan axis; providing relative motion between the print medium and the printing element to accurately position the printing element in dependence on the sensed position of the edge of the just printed portion of the image. The fine compensation needed to compensate positioning errors can be performed prior to printing a swath, or even “on the fly” during the printing of a swath. Coarse positioning errors can be measured by the sensor and compensated by use of the printer media advance system, by increasing or decreasing as appropriate the nominal commanded swath-to-swath advance distance.

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European Search Report, Jun. 9, 2001.

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